Responding down here so as not to derail your otherwise strong comment, but I was bothered by the part that read "Obviously advocates of the wall for the most p

Responding down here so as not to derail your otherwise strong comment, but I was bothered by the part that read "Obviously advocates of the wall for the most part don't give a crap about the environmental impact." This might be true on average, but not universally, and I don't think "obviously". I'm not personally an advocate for a wall, but I have pro-Trump relatives who would respect the environmental argument, particularly regarding animal habitat. I think it's a matter of weighting different priorities, rather than "not giving a crap". If all else was equal, I think many advocates would be happy using environmental impact to decide between designs.